Examlex
Countries with reliable phone service have difficulty not only communicating, but also reaping the benefits of other technology advances, such as the Internet.
Food Web
In ecosystems, a complex pattern of interlocking and crisscrossing food chains.
Trophic Level
A position in a food chain or ecological pyramid occupied by a group of organisms with similar feeding mode.
Ecosystem
A community made up of living entities and their surrounding physical conditions, interacting together in a biological setting.
Trophic Level
The position an organism occupies in a food chain, based on its source of nutrition and energy.
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